umarım işine yarar 2x+5= 7
1. +4a-5ab-3a-4b+2ab
=(+4-3)a+(-5+2)ab-4b
= +1a-3ab-4b
2. 2x-4+3x+3
=(-4)+3+2x+3x
=(-1)+5x
3.1x+2x
=3x
4.-1x+9x+6a
=(-1x+9x)+6a
=8x+6a
5.2x+1a+1x
=2x+1x+1a
=3x+10
6.18x+2x
=20x
7.5x-4-7x
=-7x+5x-4
=-2x-4
8.12+6x+9+x
=12+9+6x+1x
=21+7x
9.2x+3x
=5x
10.-6x+1+-x-4
=-6x-x+1-4
=-7x+-
